// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/views/accessibility/ax_view_obj_wrapper.h"

#include "base/strings/utf_string_conversions.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/accessibility/ax_view_state.h"
#include "ui/events/event_utils.h"
#include "ui/views/accessibility/ax_aura_obj_cache.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"

namespace views {

AXViewObjWrapper::AXViewObjWrapper(View* view)
    : view_(view)
{
    if (view->GetWidget())
        AXAuraObjCache::GetInstance()->GetOrCreate(view->GetWidget());
}

AXViewObjWrapper::~AXViewObjWrapper() { }

AXAuraObjWrapper* AXViewObjWrapper::GetParent()
{
    AXAuraObjCache* cache = AXAuraObjCache::GetInstance();
    if (view_->parent())
        return cache->GetOrCreate(view_->parent());

    if (view_->GetWidget())
        return cache->GetOrCreate(view_->GetWidget());

    return NULL;
}

void AXViewObjWrapper::GetChildren(
    std::vector<AXAuraObjWrapper*>* out_children)
{
    // TODO(dtseng): Need to handle |Widget| child of |View|.
    for (int i = 0; i < view_->child_count(); ++i) {
        if (!view_->child_at(i)->visible())
            continue;

        AXAuraObjWrapper* child = AXAuraObjCache::GetInstance()->GetOrCreate(view_->child_at(i));
        out_children->push_back(child);
    }
}

void AXViewObjWrapper::Serialize(ui::AXNodeData* out_node_data)
{
    ui::AXViewState view_data;
    view_->GetAccessibleState(&view_data);

    out_node_data->id = GetID();
    out_node_data->role = view_data.role;

    out_node_data->state = view_data.state();
    if (view_->IsFocusable())
        out_node_data->state |= 1 << ui::AX_STATE_FOCUSABLE;
    if (!view_->visible())
        out_node_data->state |= 1 << ui::AX_STATE_INVISIBLE;

    out_node_data->location = view_->GetBoundsInScreen();

    out_node_data->AddStringAttribute(
        ui::AX_ATTR_NAME, base::UTF16ToUTF8(view_data.name));
    out_node_data->AddStringAttribute(
        ui::AX_ATTR_VALUE, base::UTF16ToUTF8(view_data.value));

    if (view_data.selection_start > -1 && view_data.selection_end > -1) {
        out_node_data->AddIntAttribute(ui::AX_ATTR_TEXT_SEL_START,
            view_data.selection_start);

        out_node_data->AddIntAttribute(ui::AX_ATTR_TEXT_SEL_END,
            view_data.selection_end);
    }
}

int32_t AXViewObjWrapper::GetID()
{
    return AXAuraObjCache::GetInstance()->GetID(view_);
}

void AXViewObjWrapper::DoDefault()
{
    gfx::Rect rect = view_->GetLocalBounds();
    gfx::Point center = rect.CenterPoint();
    view_->OnMousePressed(ui::MouseEvent(
        ui::ET_MOUSE_PRESSED, center, center, ui::EventTimeForNow(),
        ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON));
    view_->OnMouseReleased(ui::MouseEvent(
        ui::ET_MOUSE_RELEASED, center, center, ui::EventTimeForNow(),
        ui::EF_LEFT_MOUSE_BUTTON, ui::EF_LEFT_MOUSE_BUTTON));
}

void AXViewObjWrapper::Focus()
{
    view_->RequestFocus();
}

void AXViewObjWrapper::MakeVisible()
{
    // TODO(dtseng): Implement.
}

void AXViewObjWrapper::SetSelection(int32_t start, int32_t end)
{
    // TODO(dtseng): Implement.
}

void AXViewObjWrapper::ShowContextMenu()
{
    view_->ShowContextMenu(view_->bounds().CenterPoint(),
        ui::MENU_SOURCE_KEYBOARD);
}

} // namespace views
